* Makefile.in (LIBGNU, INCGNU): Define.

	* Makefile.in (LIBGNU, INCGNU): Define.
	(INTERNAL_CFLAGS_BASE): Add INCGNU.
	(INTERNAL_LIBS, CLIBS, CDEPS): Add LIBGNU.
	(CLEANDIRS): New.
	($(LIBGNU), all-lib): New rules.
	(clean, distclean, do-maintainer-clean): Use CLEANDIRS.
	* configure.ac: Use gl_EARLY, gl_INIT, and AM_INIT_AUTOMAKE.
	Simplify AC_CONFIG_AUX_DIR.  Generate gnulib/Makefile.
	* gnulib: New directory, from gnulib-tool.
	* configure, aclocal.m4: Regenerated.

	* Makefile.in (LIBOBJS): New.
	(OBS): Use LIBOBJS.
	(memmem.o): New rule.
	* configure.ac: Use AC_CONFIG_LIBOBJ_DIR and check for memmem.
	* configure: Regenerated.